Table des Matières
Publicité
Alimentation
Paramètre
Hardware Fault Tolerance
Classification
Architecture
Failure mode
•
•
Failure Mode Diagnostic
•
•
Diagnostic Coverage
Diagnostic test interval
Safe Failure Fraction
Mode de sécurité pour exploitation 1oo1
● Selon la norme CEI 61508
● Selon la norme CEI 13849-1
● Selon la norme EN 954-1
KP8, KP8F, KP32F
Instructions de service, 11/2011, A5E03284307-02
Detected
Undetected
Detected
Undetected
Systematic Capability
Mode of operation
Meantime to Restoration (MTTR)
Probability of a dangerous failure per hour
(PFH)
Probability of a dangerous failure on demand
(PFD)
Safe Failure Fraction (SFF)
Diagnostic test interval
Proof Test Interval
Lifetime
Meantime to Failure (MTTF
Meantime to Restoration (MTTR)
Diagnostic Coverage (DC
Performance Level
Category
Catégorie
Valeur
0
A
1oo1D
Dangerous process value
22.50 FIT
•
0.22 FIT
•
No error signaling or no safe
values
0 FIT
•
0 FIT
•
99.03 %
< 10 ms
99.84 %
SIL3
High and low demand mode
100 h
5.95 × 10
2.61 × 10
99.19 %
15 ms
10 y
10 y
)
560 y
d
100 h
)
98.90 %
avg
d
3
3
Caractéristiques techniques
9.4 Mode de sécurité
Commentaires
–
–
–
Due to failures in the power supply
Calculation according
IEC 13849-1, CAT4
–
Voltage monitoring in hardware
–
1/h
–10
–5
111
Publicité
Table des Matières
